Thanks, I didn't get to check for answers before I left, but it worked as y'all said. I often loaded up the ramp after (or one time before) my friend was put on, or via the stairs if it was a bus with a lift instead of a ramp. Other ppl were really nice and would let me load up the steps ahead of them when the front doors opened. Thankfully, I didn't see any of the bad looks or hear any complaints/comments that others have mentioned!
One thing I did do was put a recognizable sign on the ECV so we would be able to find it quickly when we had to park it at a ride, restaurant, etc. I put two images on the sign: a Hello Kitty character (my friend's favorite, even though it isn't Disney) and the handicapped symbol. I put the symbol on there because somebody else on these boards said they put copies of their handicapped permit on their
scooter and it helped with the looks/comments. Since I couldn't make copies of my friend's permit, I put the symbol on the sign instead. So, even though she looks young and healthy and is able to walk very short distances, we didn't have any problems.
Only once (that I know of) were we on a bus with a second wheeled person (this one in a wheelchair) and that was when one of the parks closed. And once when we were on the monorail we were with another wheeled person. I think one of the times we were on the Friendship boats we were with another wheeled person, as well, but I can't recall.